MOTOROLA M68000 FAMILY Programmer's Reference ... - Freescale

BYTE n – 1
7 0
7 0 7 0
BYTE n – 1
ADDRESS
BYTE n – 1 WORD INTEGER
BYTE n + 2
ADDRESS
BYTE n – 1
.
7 0 7 0 7 0 7 0
BYTE n – 1 7 6 5 4 3 2 1 0 BYTE n + 1 BYTE n + 2
ADDRESS BIT
NUMBER
BASE BIT
7 0 7 0 7 0 7 0
OFFSET
. . . – 3 – 2 – 1 0 1
OFFSET
2 . . .
WIDTH
BASE ADDRESS
7 0 7 0 7 0 7 0
BYTE n – 1 MSB BYTE n LSB BYTE n + 1
ADDRESS
7 0 7 0 7 0 7 0
BYTE n + 3
7 0 7 0 7 0 7 0
LONG-WORD INTEGER
BYTE n + 4
7 0 7 0 7 0 7 0 7 0 7 0
QUAD-WORD INTEGER
BYTE n + 8
7 0 7 4 3 0 7 0 7 0
BYTE n – 1 MSD LSD BYTE n + 1
BYTE n + 2
ADDRESS
7 0 7 4 3 0 7 4 3 0 7 0
BYTE n – 1 XX MSD XX LSD BYTE n + 2
ADDRESS
BYTE n
0 1 2 3 . . . . w – 1
BYTE n + 2
7 0 7 0 7 0 7 0 7 0 7 0
BYTE n – 1
16-BYTE BLOCK
(ALIGNED TO
16-BYTE
BOUNDARY)
BYTE n + 16
Figure 1-21. Memory Organization for Integer Operands
Introduction
BIT DATA
BIT FIELD
DATA
BYTE DATA
WORD DATA
LONG-WORD
DATA
QUAD-WORD
DATA
16-BYTE BLOCK
PACKED
BCD
DATA
UNPACKED
BCD
DATA
MOTOROLA M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL 1-29